Author
Listed:
- Masaki Hori
(Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1
University of Tokyo, Hongo, Bunkyo-ku)
- Anna Sótér
(Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1)
- Daniel Barna
(University of Tokyo, Hongo, Bunkyo-ku
KFKI Research Institute for Particle and Nuclear Physics)
- Andreas Dax
(University of Tokyo, Hongo, Bunkyo-ku)
- Ryugo Hayano
(University of Tokyo, Hongo, Bunkyo-ku)
- Susanne Friedreich
(Stefan Meyer Institut für Subatomare Physik, Boltzmanngasse 3)
- Bertalan Juhász
(Stefan Meyer Institut für Subatomare Physik, Boltzmanngasse 3)
- Thomas Pask
(Stefan Meyer Institut für Subatomare Physik, Boltzmanngasse 3)
- Eberhard Widmann
(Stefan Meyer Institut für Subatomare Physik, Boltzmanngasse 3)
- Dezső Horváth
(KFKI Research Institute for Particle and Nuclear Physics
Institute of Nuclear Research)
- Luca Venturelli
(Università di Brescia & Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Brescia)
- Nicola Zurlo
(Università di Brescia & Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Brescia)
Abstract
CPT symmetry upheld The principle of CPT (charge, parity, time) symmetry implies that antimatter particles have exactly the same mass and absolute value of charge as their particle counterparts. Hori et al. test this principle by performing high-precision, two-photon spectroscopy of antiprotonic helium. By comparing the results with calculations, they derive a value for the antiproton-to-electron mass ratio, the first time this quantity has been determined. The result agrees with the proton-to-electron value known to a similar precision. Moreover, the work improves the accuracy with which the charge-to-mass ratio of the antiproton can be compared to that of the proton by four orders of magnitude.
Suggested Citation
Masaki Hori & Anna Sótér & Daniel Barna & Andreas Dax & Ryugo Hayano & Susanne Friedreich & Bertalan Juhász & Thomas Pask & Eberhard Widmann & Dezső Horváth & Luca Venturelli & Nicola Zurlo, 2011.
"Two-photon laser spectroscopy of antiprotonic helium and the antiproton-to-electron mass ratio,"
Nature, Nature, vol. 475(7357), pages 484-488, July.
Handle:
RePEc:nat:nature:v:475:y:2011:i:7357:d:10.1038_nature10260
DOI: 10.1038/nature10260
Download full text from publisher
As the access to this document is restricted, you may want to search for a different version of it.
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:nature:v:475:y:2011:i:7357:d:10.1038_nature10260. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.